Portable telephone



FIG. 1 is a perspective view of the portable telephone showing our new design;

FIG. 2 is a top plan view of the portable telephone shown in FIG. 1;

FIG. 3 is a left elevational view of the portable telephone shown in FIG. 1; and,

FIG. 4 is a rear elevational view of the portable telephone shown in FIG. 1.

The broken line disclosure in FIGS. 1-4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for the portable telephone, as shown and described. 